HardOCP has pictures of the P5K3 Deluxe, P5K Deluxe and the P5K.
Here's a photo of one of the boards:
OCWorkBench also has a photo and claims that the Asus P5K3 Deluxe supports both DDR2 and DDR3 memory. One of OCW's forum members believes this motherboard also has a 8-phase Vcore regulator and polymer caps which should make it great for overclocking.